Calk attachment for boots



June 7, 1927.

J- -W. MCNEILL ET AL CALK ATTACHMENT FOR BOOTS Filed Dec. 5, 1925 AT TO Rn E'YS Patented June 7, 1927.

UNITED STATES JOHN WILLIAM MGNEILL AND JOHN MICHELSEN, 0F WISTARIA, BRITISH COLUM-.

PATENT OFFICE.

BIA, CANADA.

CALK ATTACHMENT FOR BQOTS.

Application filed December 5, 1925. Serial No. 73,470.

Our invention relates to improvements in calk attachments for boots, the objects of which are to provlde means whereby rubber boots such as are worn in the woods may bev metal strips pivotally connected together in the manner of a pair of tongues, such strips being provided with clips adapted to grip the sole of a boot and means for securing the outer ends of the strips to the boot heels.

Fig. l is a side View of the invention attached to a rubber boot.

Fig. 2 is a plan View of the attachment taken from the underside.

In the drawings like characters of refer ence indicate corresponding parts in each figure.

The numeral 1 indicates a boot having a welted sole 2, an arch 3 and a heel 4. The numeral 5 indicates a pair of curvilinear strips of metal which are inturned at their forward ends and pivotally connected together as at 6 in the form of a pair of tongues. Intermediate their length, the strips 5 are upwardly curved to conform substantially to the arch 3 as at 7, the outer ends of the strips are then bent downwardly and longitudinally under the heel t to form heel portions 8. The numeral 9 indicates a plurality of clips which may be formed integrally with the strips or connected thereto .by rivets 10, $0 as to permit the clips, which are adapted to embrace the welt of the sole 2 to adjust themselves to its curvature.

The heel portions 8 of the strips are apertured as at 11 for the purpose of receiving screws 12 by which the rear end of the attachment is secured to the heel 4 of the boot.

The numeral 13 indicates a plurality of calks riveted at intervals along the strips and projecting downwards therefrom.

Having thus described the several parts of our invention we will now briefly explain its attachment.

The heel portions 8 of the attachment are spread apart and the boot placed in position thereon, theheel portions are then brought together whilst adjusting the strips longitudinally ,to bring all the clips 9 into suitable gripping engagement with the welt of the sole 2. When a suitable position is at tained the heel portions 8 are secured to the heel 4 of the boot 1, which'portions, being prevented from outwardly opposed move ment, cause a constant and effective grip to belmaintained by the clips 9 upon the welted so e.

It will thus be seen that we have invented an attachment which can be conveniently carried by persons having temporary need of non-slipping protection upon their boots, and which can be readily applied, and a means of affording such protection to rubber boots having soles which are incapable of supporting calks in the same manner as leather boots.

l/Vhat we claim as our invention is:

A calk attachment for boots compris: ing relatively adjustable calk carrying members presenting sole engaging portions curved longitudinally for a portion of their length to conform to the bottom contour of the boot sole, the remaining portion of the length of each member being bent twice at right angles to provide a vertical portion adapted to engage the breast of the heel and a horizontal portion adapted to flatly engage the bottom portion of the heel, said members being equipped with means for gripping the same to the sole of the boot when the members are adjusted to predetermined positions and being adapted to be secured in such adjusted positions by fastening devices passed into the heel of the boot through the horigontal heel engaging portions of the memers.

Dated at l/Vistaria, B. (1., this 21st day of November 1925.

JOHN WILLIAM MoNEILL. JOHN MIOHELSEN. 

